Educational device



June 4, 1963 R. w. FlscHMAN l-:TAL 3,09L868 EDUCATIONAL DEVICE 4 Sheets-Sheet l Filed Nov. 15, 1981 R. W F/scHMA/ W ,N N A P Mfim EN W O J. w W W. W

June 4, 1963 R. w. FlscHMAN I-:TAL 3,091868 EDUCATIONAL DEVICE Filed Nov. 15, 1961 4 Sheets-Sheet 2 '6/ 46 F/G. 2A

T0 T0 MOTOR MOTOR az 89 R. u'. F/scHMA/v /NVENTORS J. OPPERMA/v ATTO/QNEV R. W. FISCHMAN ETAL June 4, 1963 EDUCATIONAL DEVICE 4 Sheets-Sheet 3 Filed Nov. 15, 1961 R. W. F/scHMA/v /NVENTORS J. OPPERMAN PWM ATTOR/VEV ang This invention relates to educational devices and more particul-arly to methods :and 'apparaftus for facilitating the teaching of history.

lt is well imo-wn that many individuals, p'articularly children, have great difculty in mastering the subject of history. This is in great part attributable to the fact that these persons cannot mentally picture historical sequences. For example, -although one may be able to remember that at one `time in French history the lacobins were a major political force and 'also that subsequent to the Revolution Napoleon `gained power, one might find it diicult to retain not only the respective dates or periods of the various events, but equally 'as important, their cause and efiect relationship or the historical significance of one upon the other. Without the proper perspective history does not appear to have 'a continuously unfolding nature. Not only is it exceedingly diificult for these persons to remember the nature and importance of isolated events, but what is perh'aps most unfortunate is that these individuals never can obtain a true picture of history as they `are unable to visualize lthe various events they are studying in historical perspective.

lt is an object of this invention to provide improved methods and app-ar'atus for vthe teaching of history.

lt is another object of this invention to provide methods and opparatus whereby the student may conveniently, rapidly 'and efficaciously learn `the dates `and periods of events he is studying.

lt is still another object of this invention to provide methods and 'apparatus whereby a clear and more complete appreciation of the continuity 'and interrelationship of historical events may be obtained more rapidly and conveniently than has heretofore been possible.

The invention is predicated upon the `faot that a fuller grasp of the historioal significance of various events may be obtained if these events 'are displayed not only pictorially `and sequentially, as in book form, but on -a continuous and calibrated paper or other suitable tape. In accordance with one aspect of the invention, ia continuous reel of paper tape of approximately two inches diameter is provided. This reel of t'ape may be placed on one spindle of a tape transport mechanism with another reel provided for the take-up. The 'app'anatus is similar to 'in ordinary tape recorder 'although paper tape of much arger width is used rather thm the conventional magetic tape. Most essential is the fact that the paper tape is calibrated. For example, one inch on the tape may represent one year of history. On the tape are printed n a calibrated and sequential mianner every fifth or other nultinle of a year. Thus if a particular tape is fto be used for the teaching of history from the year 1000 B.C. until 'the present, the -front end of -the tape Will have the d 1000 BC. printed 'along the top edge. Five inches away from the front of the tape and also along the top edge is printed the year 995 8.0.; 'five inches away the year 990 BC., etc. until the last date `at 'the end of the tape appears, for example 1965 AD.

astra Fatented June 41, 1963 The student, in studying, `yand in accordance With one use of the in'vention, plastes starnp-like pictures on the tapc underneath the appropriate years. Alternative'ly, the tape may have the pictures displaying the historical events already printed on it when' manufactured. In either event a continuous picture of history is rende'red available so that the student is no longer required to mentally visualize historie-al sequences nor is he required to 'turn the pages of 'a book Whereby the mental picture can be unfortun-ately disrupted. The tape is wvo'und by the .student with the various events of significance continuously unfolding before his eyes. What is, perhaps, even more significant is the fact that a historical perspective is achieved Without requiring the memorization of dates. As the tape unfolds in a continuous m'anner the student soon subconsciously land effortlessly knows that the l'acobins seized power 'before and heilped lay the foundation for the rise of Napoleon. Not -only lare the events sequenced properly but the fact that Napoleonis reign occurred 'so soon `after the Jacobins, as seen by the Napoleon vignette occurring soon after the J'acobins, aids the student in understanding fthat the one directly or at least partially led to the other. The historical interrelationships of important events, lachievements, periods, etc. 'become inexorably fixed in the 'student's mind. The continuous picture tape actually shows one event following the other with no confusing disruptions, land because the tape is linearly calibrated the historical events are automatically rplaced in their proper historical perspectives 'by the student.

'By using tirne as -a frame of reference for the fixing of historie events, a 'gestalt or wholeness is provided for many learners which more traditional methods, such 'as readings, lectures, filrn strips and motion pictures, separately or .in combination, may not effectively communicate. A unit of perception achieved by `study in iso'lation is diflicult to fix lin awareness and to retain. The invention facilitates equipping such learners with an apperceptive-mass .to which further concepts may more rela-dily be linked.

Many 'learners have particular diiculty in the rapid shif'ting of the mental products of time-sequences. The very a'bstraction of time-function, the before-and-after rel'ative to a particular' datum of learning experience, is frequently insurmountable stumbling block to the study of history for such 'le'arners A day, `a month, a year, a decadc are 'abstracts devoid of meaning unless concretely :associated with `a perceptual and motor task. The invention makes possible the concretization of the event within a known 'and readily-percewed fname of reference facilitating the apprehension of further percepts and concepts.

As a -ffurther example of the advant'ages of the invention oonsid the effect on the student When he observes those pontions of the tape represen-ting the time' intervals from 400 AD. till 1000 AD. :and from 1750 AD. till the present passing before him. The former is the period o-f the Dark Ages. Very little can be entered on this relatively eXtensive portion of tape. The fact becomes firmly implanted in the studenfs memory that there was very little for him to enter on the tape in that portion represened by the Dark Ages precisely because fe'w religious, scientific, political land economic events 'of surviving significancc occurred. On the other hand consider how acutely he becomes aware that the |great technology of our day blossomed only in the Hast 2.00 years las represented on a relatively short length `of tape. The pictorial representations of these ltwo periods of history in a continuous, sequential and calibra-'red manner emphasize their significances 'and dur'ations as has been heretofore impr-actic'al.

TheV first and basic embodiment of the invention provides a tape transport mechanism having stop, forward and reverse controls. Two reels are provided and the calihrated paper tape is wound thereon. In accordance with an aspect of this em'oodiment of the invention, means are provided for automatically mechanically pasting vignettes on the tape. In addition, two cover-up panels are provided. One of lthese can be moved to cover the printed dates on the tape while the other may be moved to cover the major part of the tape, the area of pictorial representation. In this manner the student may cause the tape to lbe wound to any point he desires and have showing either only the date or only the vignettes. The blanking of 'the tape in this manner stimulates the student operating the apparatus to then suppiy the other for self-testing purposes.

In accordance with a second embodiment of the invention four tapes are provided, all wound on the'same two reel-supporting shafts and appearing in parallel on the viewing area of the tape transport enclosure. The top tape is slightly greater in width than the other three, the dates being printed on this tape alone. The four tapes are used respectiveiy for representing thereon events of political, economic, religious and scientific significance. The various pictorial representations are pasted on the different tapes in order that it become clear to the student that these four aspects of history are very much interrelated. Not only is each aspect given its own historical perspective -but the relationship of one to the other is apparent. It becomes clear almost suhconciously, for example, that the same factors contri'outed to motivation of a religious Reformation, a scientific Renaissance, economic development and growth, and political agitation. This method of utilizing parallel tapes is highly efficacious.

In accordance with a third embodirnent 'of the invention means are provided for recording the student's voice. At the same time that the student pastes a picture depicting a histor'ical event on the paper tape he records in his own voice and words the nature of the event he is studying. In this manner, at any future time he may ohserve the pictorial representation of any event at the same moment that he is listening to his own description of it. It is apparent that various events require different lengths of recording tape to be associated therewith. For this reason means are provided to allow the student to synchronize the recording tape With the paper tape and yet allow him any length of recording tape he desires for each event.

It is a feature of this invention to provide tape transport means for automatically or manuaily transporting a calibrated dated paper tape.

It is another feature of this invention in one em'oodiment thereof to provide means for automatically pasting premanu'factured drawings or vignettes on the tape.

It is another feature of lthis invention in one emhodiment thereof to provide cover-up panels for covering either the pictorial representations or the dates on the paper tape. i

It is another feature of this invention in one emhodiment thereof to provide four parallel .tapes all wound on the same two shafts, the four tapes representing respectively events of political, economic, religious and scientific significance.

It is another feature of the invention in one embodiment thereof to provide means for enabling the student to apportion any desired length of magnetic or similar voice record-ing tape to any of the events depicted on the paper tape, these means including means for automatically vsynchronizing the paper and recording tapes to each other.

Further objects, features and advantages of the invention will become apparent upon consideration of the following description, taken in conjunction with the drawing, wherein:

FIG. 1 is a perspective view of a first ernbodiment of the invention;

PG. 2 is a cut-away top FIG. 1;

PIG. 2A is a more detailed schematic of a switch included in the cut-away view of PIG. 2;

FIS. 3 is a cut-away -top view of a second ernhodiment of the invention;

FEG. 4- is a cut-away side view of the second embodiment of the invention; and

FIG. 5 Vshows additional features comprising a third embodirnent of the invention.

A perspective view of the first emhodiment is shown in FIG. l. Referring to this figure a continuous movable tape 17 is wound on two reels contained Within the enclosure 7. The tape itself passes over rollers 13 and 19 attached toV thelid 8. The lid 8 comprises the front and top of the device and is connected by a hinge 14 to the enclosure 7. A handle 15 is attached to lid 8, this handle being used for rotating lthe lid 8 about hinge 14 for iifting it in order to initially .wind the tape 17 on the 'two reels contained within the enclosure.

Togf'le switch 16 projects through lid S. This switch controls the operation of two motors contained within enclosure '7. When the switch is placed in the W or wind position one motor operates and causes one of the reels to rotate. When the switch is in the RW or rewind position the other motor causes the other reel to rotate. In this manner the paper tape 17 may be automatically wound in either direction.

The Wheels 9 and 10 having thereon respective handles 29 and 131 are used for manualiy rotating either reel. A shaf-t is attached to each of these Wheels and connects the respective wheel through a clutch arrangement, not shown in FIG. 1, to a respective reel. The wheel 10 is shown in cut-away form to disclose me shaft 11 and spring 12.. Each wheel and shaft arrangement is provided with a spring for normally disengaging the respective shaft from the associated reel. In this manner when the tape is driven by one of lthe two motors the Wheels 9 and 10 do not rotate and thus cannot possibly injure the hand of the student. The motor driving mechanism is provided for winding and rewinding the tape at a convenient speed. The manual controls are provided for moving the tape through shorter distances.

On the tape 17 are printed in a chronological and calibrated manner a series of dates, the dates 1890, 1895, 1900, 1905 and a part of 1910 being shown on the drawing. The student pastes the premanufactured stamp-like picture or draws a pictorial representation of a historical event under the appropriate date. Thus, for example, under the year 1900 a picture of Theodore Roosevelt, elected the 25th President of the United States, wouid be placed. Similar pictorial representations are attached to or drawn on the tape under the appropriate portion of the tape Within each five year interval.

The student by use of the manual controls 13 and 29 or the motor driven mechanism Controlled by toggle switch 16 causes the reels to wind or rewind until the desired section of the tape appears before him. This procedure is followed whether the student is constructing the pictorial representations on the tape, or whether he is studying from a tape he has previously worked upon, or from a manufactured tape already containing thereon the pictorial representations. 'It is apparent that the various events of history continuously unfold before the student's eyes. Not only are 'these events depicted in pictorial representations under the appropriate dates but in addition the events are given their true historical perspectives. The proximity of one event to another, that is, the physical dstance between one pictorial representation and another view of the embodiment of depends upon their time relationship. This relationship is inexorably fixed in the studentfs mind by the use of the calibrated dated tape. In this manner he gains a true historical perspective and becomes aware of the continuous nature of the subject he is studying.

Two cover-up panels 20 and 21 are provided. These panels are in the most part hidden by the lid 8 and enclosure 7. When it is desired to cover up either the dates or the pictorial representations either panel is lifted and folded over the appropriate portion of the tape. This is achieved in an obvious manner. The purpose of these two panels is to enable the student to visualize either the dates or the pictorial representations alone. As a test of his knowledge he may then mentally supply the hidden information.

Means are also provided for conveniently pasting the pictorial representations on the tape. When the push rod 23 is operated a rack and gear arrangement within the housing 22 causes shaft 25 to rotate in such a manner that the slab 27 attached to the shaft rotates about hinge 26. The gummed surface of the stamp-like pictorial representation is placed upwards on the section 28 of slab 27. When the push rod is operated the slab 27 rotates and is placed directly on the tape 17. Area 28 is chosen so that when the slab 27 is rotated to a position on top of the tape, area 28 is directly above that area of the tape 17 provided for the pictorial representation. In this manner the pictorial representation may be conveniently and advantageously attached to the tape 17. The push rod 23 is spring loaded. Spring 24 is provided so that once the push rod is operated it is automatically released and slab 27 reverts to its normal position as shown in the figure. The pictorial representation is held on slab 27 by placing on area 28 a material which causes 'the pictorial representation to adhere to it by means such as electrostatic attraction. When the slab is pressed upon the tape, the latter is supported by lid 8 over which the tape passes. The stamplike pictorial representation includes on its underside an adhesive which causes it to adhere to the tape when it is applied.

FIG. 2 is a top view of the embodiment of FIG. 1. A portion of the top part of lid 8 has been cut away in order to show what is beneath it. The two shafts 11 and 31 are shown connected to the respective shafts 36 and 37 having thereon reels 32 and 33 by two respective clutch assemblies 34 and 35. When the handle 13 is grasped and the wheel pressed against the lid 8 it is seen that clutch 34 is engaged. By then turning the wheel 10 shafts 11 and 36 rotate. Shaft 36 when rotated causes reel 32 connected thereto to rewind the tape. In a similar manner wheel 9 is operated and winds the tape on reel 33. The Springs 12 and 30 are provided for normally disengaging the clutch assemblies. In the normal positions the clutch assemblies are as shown with the shafts 11 and 31, respectively, disengaged from shafts 36 and 37. In this manner when the reels are rotated by the operation of one of motors 38 and 39 the Wheels 9 and 10 do not move and there is no danger of injuring the studenfs hand if he is grasping one of the handles.

There are six terminals on togg e switch 16. Conductors 50 and 51 are connected to the wall socket or other power source by the cord 52. There is a closed path connecting conductor 50 to conductor 54-, this path to be described hereinbelow. Conductors 51 and 54 are connected respectively to either conductors 55 and 56 or conductors 5'7 and 58 by the operation of the toggle switch. In the neutral position conductors 51 and 54 are connected to none of conductors 55- 58 and neither motor is operated. In the wind position conductors 51 and 54 are connected respectively to conductors 57 and 58 and motor '39 operates. This motor turns shaft 37 which in turn causes reel 33 to rotate and the tape to be wound on it. Similarly when the switch is in the rewind position conductors 51 and 54 are connected to conductors 55 and 56 respectively and motor 38 operates. This motor rotates shaft 36 and reel 32 and the tape is rewound on this reel.

Conductors 50 and 54 are provided as part of a safety mechanism. Rather than connecting conductors 50 and 51 directly to either conductors 55 and 56 or conductors 57 and 58 the series circuit connecting either motor to the power source includes conductor 54. Conductor 50 is connected through contacts 60 to conductor 61. Conductor 51 is connected through contacts 62 to conductor 63. Conductor 63 terminates in the metallic protrusion 64 which is connected to the bottom of lid 8. The protrusion 64 contacts the metallic protrusion 65 which is connected to the inside lower section of enclosure 7. Both protrusions 64 and 65 are insulated from the lid 8 and enclosure 7 respectively, as are also contacts 60' and 62. Conductor 54 is connected to the metallic protrusion 65.

When either set of contacts 601 or 62 is opened the series circuit connecting the power source to either motor is opened. Similarly if .the lid 8` is lifted and the two metallic protrusions 64 and 65 do not contact each other the series circuit is opened and neither motor operates. These three contact devices are provided as safety features. When the student is manually turning reel 32 by pressing wheel 16 against lid 8 and engaging the clutch assembly 34 it is seen that the fiange 66 opens .contacts 60] Similarly when he is manually Operating wheel 9 and reel 33, flange 67 causes contacts 62 to open. In this manner the motor cannot be operated while the student is manually Operating the machine. This safety feature is provided to insure that the wheels 10 and 9 may not be caused to rotate by the operation of either motor. The motors are only energized when the two clutch assemblies are disengaged.

In a similar manner the cover safety switch comprising protrusions 64 and 65 prevents the operation of either motor When the lid is in a lifted position. The lifting of the lid causes the two elements 64 and 65 to be separated and the series circuit broken. The motors only operate when both clutch assemblies are disengaged and the lid 3 is securely placed on the enclosure 7.

FIG. 2A discloses the electrical connection in greater detail. Conductor 51 is connected directly to one of the ganged movable contacts within toggle switch 16. Conductor 50 is connected through the three sets of contacts to conductor 54 which is connected to the other of the movable contacts within the switch. When the toggle switch is operated conductors 51 and 54 are connected to either conductors 53 and 57 or conductors 56 and 55. One of the two motors is thus operated if all three sets of safety contacts are closed. The reels 32 and 33 are held in place on shafts 36 and 37 by the two positioning fianges 68 and 69 and the two spring loaded positioning devices 70 and 71. The fianges are fixed to the respective shafts '36 and 37. The spring loaded positioning devices 70 and 71 are of the type wherein a metallic disk shaped surface extends from the shafts 36 and 37. In their normal positions these devices are partially above the shafts and together with the positioning flanges hold the reels in place. When it is desired to place a reel in the machine or to remove one it is merely necessary to exert a slight force against the spring loaded positioning device 70 or 71 and to depress it within the shaft. 'When depressed, the reels slide over them.

The shafts 36 and 37 on which the reels are placed are connected to the respective motors 38 and 39. The motors are rgidly fixed by means of bolts connecting them to the respective mounting brackets 72 and 73. Shafts 36 and 37 are removable from respective motors 38 and 39 in order that the tape Wheels may be mounted on them. Shafts 36 and 37 are insertable into the respective motors in such a manner that the motors exert no force on them other than the circumferential torques.

FIG. 3 is a top partial view of a second embodiment of the invention and FIG. 4 is a partial side view of the same embodiment. In this second embodiment four reels 7 80-83 and 84-87 are positioned on each of respective shafts S8 and 89. Each shaft is again turned by either manual or motor driven equipment' ;Only parts of these various controls are shown; their similarity to the controls of FIGS. 1, 2 and 2A obviate the necessity of repeating their disclosur'esf The four reels'are maintained'in their respective positions on each shaft by slightly different positioning mechanisms. A series of spring loaded positioning devices such as V70and 71 in FIG. 2 would be insufficient in the embodim'ent of FIGS. 3 and 4. The shafts are much longer in this embodiment as they each carry four reels. Consequently some additional means must be provided for supporting the shafts 38 and 89. Referring to vFIG. 4 the means associated with shaft 89 are disclosed, the identical mechanisms associated with shaft 88 being hidden behind those associated with shaft 89 in the drawing. Each of the four members 90-93 is connected to a respective nylon or similar block 93-101. These bloclrs not only separate the reels from each other but in addition support the shaft 89. Nylon or similar material having an adequate' bearing surface is used. The reels as Well as the shafts bear against the various surfaces of the blocks 98- 101 and consequently they should be of good bearing material.

The positioning flange 12 is permanently attached to the shaft 89. In order to place the first reel 87 on the initially unloaded shaft 89 the four members 90-93 are bent on their respectivehinges 94-97 in order that the reel '87 slide along the shaft until it is up against the positioning flange 162. Member 93 is 'then released and Springs up. The nylon block 191 not only positions reel 87 firmly but in addition provides a bearing surface for the shaft 89. Reel Y86 is then placed on the shaft and member 92 released. This member separates reelsrS and S5. In a similar manner reels 85 andid are placed on the shaft 89. Shaft 39 is removable from its respective motor as is shaft 88 in the same manner as shafts 36 and $7.

The reels are placed on the shafts When the lid 8 is in uplifted position. Again the motors in the embodiment of FIGS. '3 and 4 are prevented from Operating when the lid is up and the cover Safety switch 64 and 65 open. Hinge 107 is provided in addition to the hinge 14 of the first embodiment. Thercabinet hinge 107 is of the' type which maintains the lid in a lifted position once it is placed there. When it is desired to close the lid the hinge is depressed in a well-known manner and `the lid closes once again. i i

The reels '83 and 87 are slightly wider than the reels 80-82 and 84-86. The dates are printed on one tape alone. The four tapes are used respectively for representing thereon events of political, economic, religious and scientific significance. As has been described heretofore the various pictorial representations are attached to diiferent tapes in this embodiment in order that it becomes clear to the student that these four aspectsrof history areV not only very much interrelated but in addition in order that each be given its own historical perspective as Well.

The third embodiment of FIG. is similar to the first embodiment of FIGS. 1, 2 and 2A. For this reason almost all of the detali of the first embodiment is omitted in this figure. Only the additional structure is disclosed.

rIhe embodiment of FIG, 5 provides means for recordi'ng the studentis voice on a magnetic tape. This is not only of aid in the teaching process but in addition enables the student to test himself. The tapes are eraseable and the studentV records verbal descriptions of the pictorial representations he is visualizing. At a later time he compares his own verbalization with aprior script provided by the manufacturer along with the stamp-like pictorial representations. p

It is essential to synchronize the magnetic Vand paper tape. This is necessary in order thatv the student be able to automatically have the appropriate portion of magnetic tape playing while he is visualizing a particular vignette oi1`the papertape. .lt is not possible to provide the same length of magnetic tape for each equal length of paper tape for it is apparent that certain historical events require a greater amount of elucidation than do others. Means are provided therefore'for enablingi the student to apportion anylen'gth ofV magnetic tape to a particular year or period of history. By Operating a series of `keys he can control the paper tape to be automatically wound on the reels. Only the period he desires is on the exposed portion of the paper tape. Not only is the paper tape automatically transported but .in addition the magnetic tape is automatically nioved as Well. When' the student operates keys designating a particular date the magnetic tape is automatically wound until that portion of the tape bearing the verbal description of the year or period selected is adjacent to the voice reproducing or recording inechanism. At this time the student can either record his voice or listen to it being played back. i

The circuits employed for achieving this feature coni sist primarily of two shift registeris and a plurality of AND gates'. Shift registers are Well known in the electronie art. The shift registers employed each contain 40 stages. Each stage can be maintained in either an energi/:ed or an unenergized condition. Each input pulse places the first stage in either an energized or unenergized state. The succeeding pulse sets the first stage in accordance Withrthe information it carries and causes the information stored in the first stage by the previous pulse to be shifted to the second stage. The second stage is thus energized or unenergized in accordance with the first pulse While the first stage is energized or unenergized in accordance With the second pulse. in a similar manner the third-pulse controls the state of the first stage and shifts the states of the first and second stages to the second and third stages respectively. After the 40th pulse is received the 40 stages of each shift register are set in accordance With the 40respectve input pulses.

i The pulses in the invention are of either a positive or negative polarity. A negative pulse energizes the first stagerof the shift register While a positive pulse does not. ''hese positive and negative pulses are recorded on a magnetic tape in a manner to be described hereinbelow.

The AND gates used in the invention are of the type |having two input terminale and one output terminal. The output terminal is energized if the inputs to both input terminals lhave the same polarity, that is, they are both either positive or negative. In such an event the output terminal is energized.

in theembodiment of FIG. 5 the paper tape has attached to it a magnetic tape 121. On the magnetic tape,v alongside each section of paper tape, is magnetically ecorded the date Written on the tape. The section of magnetic tape 122. above the section of paper' tape containingV the Vdate 187i) is shown in an enlarged view at the top of the figure. It is seen that a series of impulses are recorded on the magnetic tape. The magnetization of each part of the tape is in either a neutral condition, or in an upward or downward direction. Each section of magnetic tape such 'as section 122 'has 50 impulse positions. The left-most 10 positions are neutral, that is, the tapeis unmagnetized. Of the second 10 left-most positions only the magnetization of one position is in the upward direction. Ineach set of ten the right-most position represents a zero, `the second Vrightmost a one, etc; AAs seen in the section of magnetic tape 3.22 the magnetizations under positions O and 2-9 are in a downward direction in the second left-most group' Only the magnetization in the 1 position is in the upward directiou. i

vOf the middle 'group only the magnetization of position 8 is in the'upward direction. Similar remarks apply to the positions 7 and O of the twol right-most groups.

As seen in FiG. 5 the date 1870 is represented on the section of magnetic tape 122 by havin0 the single upward magnetization in each group of ten in the appropriate position. =In a similar manner the section of magnetic adiacent to the section of paper tape bear-ing the date 1875 has the date 1875 recorded on the magnetic tape. Similar rernarks apply to the remainder of the magnetic tape 121.

A second magnetic tape 123 is provided. This tape has two tracks. Track 124 is used for recording the voice of the student. Track 125 is used for placing thereon the date of the event the student is describing. It is necessary to synchronize the voice tape With the paper tape. For this reason the paper tape is provided with the magnetic tape section having prerecorded thereon the dates associated with each section of the paper tape. When the student uses a particular section of track 124 for recording voice information he manually records the appropriate date as contained on track 121 on track 125.

This is accomplished by means of movable block 126 and the associated equipment. Key 127 is operated and it is seen that all electrical impulses indnced in the head 128 are transmitted via amplifier 129 and the contacts on key 127 to the 'head 14W. 'The student operates key 127 and manually pulls the block 126 to the left until he reaches the left end section of the selected date on the magnetic tape 121, the left end of section 122 for example. When he releases the block, spring 141 pulls it back to the position shown. However, in so doing the magnetizations within section 122 cause electrical impulses of the appropriate polarities to be induced in the head 128. These impulses are transmitted through amplifier 129 and key 127 to head 149. As the spring pulls the block to t-he right the magnetizations of section 122 are recorded on the track 125 of tape 123. The leftmost portion of section 142 of track 125 is unmagnetized as is the left-most portion of section 122,. There follows eight positions having magnetizations in the downward direction, followed by one position having a magnetization in the upward direction, etc. The date is recorded on the section 142 exactly as it is lrecorded on the section 122. Each time the student records a description of another historical event, before he begins he operates key 127 and pulls the block 126. By recording the dates of the events he is describing on track 125 he will be able in a manner to be described hereinbelow to later automatically select a particular portion of the tape 123 and will thereby be enabled to listen to a particular verbal description on the voice track 124.

In order to record the verbal description on track 124 L key 143 is operated. The student speaks into microphone 144 and his voice signals are transmitted through amplifier 145 to the head 145. By means of this head the verbal description is recorded on the track 124. When the student desires to listen to his own description he operates key 14-7. As the tape moves from left to right the head 146 detects the voice record. The signals are transmitted through amplifier 148 and key 14-7 to speaker 149.

Means are provided in the embodiment of FIG. to enable the student to automatically select a particular section of paper tape and the associated portion of magnetic tape 123. The embodiment of PIG. 5 is provided with motors and manual controls for winding and rewinding the tape as are the first two embodiments. In addition it is provided with two extra motors, these motors also not shown in the drawing as they control the motion of the tape in a similar manner to the motors disclosed in the other figures, for moving the respective tapes in the forward direction or as shown from left to right. These motors are of the type which operate when a starting key is operated and continue to operate until a stop signal is received. Means are provided in the embodiment of FIG. 5 for transmitting stop signals to the two motors when the two respective tapes have advanced to those points where the pictorial reprcsentation and verbal description associated with the particular date selected by the student are recorded.

As the picture and magnetic tape combination and 121 moves from left to right the impulses on the magnetic tape 121 induce electrical signals in the head `128. These signals are transmitted via amplifier 129 and conductor 15h to the input of shift register 151. This shift register contains 40 stages divided into four groups of ten stages each. A vertical magnetization induces an electrical signal in the head 128 which energizes the first stage of shift register 151. The next input shifts this energized state to the second stage and in addition either energizes or de-energizes the first stage. A downward magnetization results in an unenergized stage. It is thus seen, for example, that when the section 122 has passed the head 123 in moving from left to right, stage 1 of the left-most group of ten stages of shift register 151 is energized. Similarly stages 8, 7 and O` of the second, third, and fourth groups respectively are energized. The rernaining stages are unenergized. Each stage is connected by an output conductor 153 to one of AND gates 152. If the stage is energized. a negative potential is applied. If it is unenergized a positive potential is applied instead. Thus for each date four of the 40 AND gates 152 have negative potentials applied to their inputs connected by conductors 153 to the associated four energized stages of shift register 151. The remaining 36 gates have positive potentials applied to their inputs connected by conductors `153; to the respective 34 unenergized stages. As the tape 121 moves by head 128, successive dates are stored in shift register 151.

The student selects a date by operating four of the 40 keys 155. These keys are arranged in four groups of ten each and the student selects one key in each group. In the drawing the keys 1, '8, 7 and (1 in `the four respective groups have 'been operated. Each key when operated looks the associated contacts 1156. When these contacts close, a negative potential source '157 is connected to the associated conductor 158. The conductors 158 are each connected to one input of a respective one of AND gates 152. The conductor 158 associated with key 9 of group 1 is connected to the left-most AND gate 152. The conductor 158 associated -with key 8 of group 1 is connected to the second left-most AND gate 152. In a similar manner the other 38 conductors 158 are connected from the 30 keys to the 30 respective AND gates. When a particular key is operated a negative potential is applied to the associated conductor 158 and therefore to one input of the associated AND tgate. If a key is not operated it is seen that the associated conductor 158 is connected directly through a resistor 155` to a positive source 1659. If a key is not operated a positive potential is applied to the input of the associated AND gate 1152.

Thus When the student operates four of the keys 155 the associated four AND .gates have applied to one of their two inputs a negative potential. The remaining 36 AND gates connected to conductors 158 associated with unoperated keys have positive potentials applied to the associated inputs. Four of the AND gates 152 have negative potentials applied to their inputs connected to the shift register 151. The remaining 36 inputs connected to shift register 151 are positive in potential. As he tape 121 passes the head 128 successive dates are stored in shift register 151 and therefore successive groups of four of conductors 153 are energized negatively. When the date contained within shift register 151 is the same as the date selected by the student the four conductors '153 having negative potentials thereon are connected to the same AND gates '152 which have connected to their second inputs conductors 158' having thereon negative potentials due -to the operation of the associated keys 155. Both inputs of the remaining 36 A'ND gates similarly are of the same polarity, these 36 pairs 8,os1,ses

of inputs all being positive. lt is only at this time that signals are applied to all 40 of the output conductors 1-51. These 40 output conductors are connected to the 40 inputs of AND gate m2. This AND gate is of the type which applies an output pulse to conductor 153 only when signals are applied to all 40 inputs. Thus AND gateV 152 is operated only When the 40 AND gates 152 operate. Conductor 163 is energized only When the date contained in Shift register 155i is identical to the date selected by the student. At this -time the signal applied to couductor '163 operates the stop control of the motor used for winding paper tape 129' (attached to magnetic tape 12:1). The motor stops Operating and the tape 125Ll is wound no further. At tln's point the selected section of paper tape is before the student, in the ill-ustrated case the section shown in PIG. 5.

The timer 154 is connected between the reset terminal of the shift register 151 and conductor 15%. This timer is of the type which automatically applies a reset pulse for de-energizing all 40 stages of the shift register 151. After each input pulse of either polarity the tirning cycle begins and after a predetermined time the reset pulse is applied. However, if an input pulse of :either polarity is applied prior to lthe completion of the timing cycle the timing cycle begins ane'vv. The timing cycle has a duration equal to the time required for five impulse portions of the tape 12.1 to pass by the head 128. Thus 'as the 40 impulses of either polarity representing the date on a section such as section 122 are being applied to the input of shift register 151 the timing cycle never terminates and a reset pulse is not applied. However, when the left-most portion of the section 122 passes by the head 'E23 no siguals are 'applied to the input of Shift register 15'1. Consequently the timer times out and a reset pulse is applied. The reset pulse vde-energizes all 40 stages in the shift register 151 and readies it for reception of a new date or new sequence of 40 pulses.

In the same manner that means are provided for automatically stopping the motor winding the paper tape, means are provided lfor stopping the motor Winding the magnetic tape 123 at that point Where the verbal description relating to the selected date is heneath the head 146. The student then operates a motor associated With the tape 123' at the correct speed for reproducing his verbal description. Key '-147 is operated and the student hears his voice through speaker 149.

The means for stopping the motor associated with magnetic tape 123 'used in the automatic selection procedure are identical to the means for stopping the motor associated with the paper tape. Shift register 170 is provided with 40 stages. Forty AND gates 171 are provided and connected to the 40 stages of Shift register 17% and the 40 conductors 158 in a manner identical to the connections of the 40 AND gates l to shift register 151 and conductors 153. AND gate 172 is analogous to AND gate 162. As the tape l1123i` passes the head 14h electrical signals are induced in the 'head 140 with a polarity depending upon the directions of the magnetizations of thegtrack 125. These signals are transmitted from the head 14h through amplifier 174 and conductor 175 to the input of Shift register 17th When the date stored within shift register 179 is identical to the date selected by the student a signal is applied to conductor 173. This signal stops the motor which is moving the tape C123. At this point the student operates the motor for moving the tape at that speed required for proper voice reproduction.

Each of the shii't registers 1511 and l'Ttl` and the 'associated equipment is independent of the other. Stop signals are applied 'to conductors 163 and 173 at different times. Whichever one of the paper tapeV 12h (and attaohed magnetic tape 12.1) and tape 123 reaches the desired position first is stopped at this point. 'Ihe other ta-pe continues until it too reaches that position selected by the student.

lt is thus seen that in the ernbodiment of HG.

the student is enabled to record on a magnetic tape a verbal description of the same event for which he is attaching a .pictorial representation to the paper tape. He is liltewise enabled to record magnetically the date of the event he is describing directly on the magnetic tape. In this manner he can automatically select the particular portion of either tape associated with a particular period of history he wishes to study. By providing means for enabling him to verbally record a description of the same event he is pictorialiy reproducing on the paper tape, the learning process is greatly enhanced. Not only does the student perceive history as a continuous process and not only is he given a proper historical perspective, but in addition he becomes even more familiar with the events, personalities and periods he is studying because he can record in his own words verbal descriptions of the pictorial representations he is attaching to the continuous and calibrated paper tape. The features disclosed in the first two embodiments including the four parallel paper tapes may be easily incorporated into the embodiinent of FIG. 5 in an obvious manner.

lt is to be understood that the above-described arrangements are illustrative of the application of the principles of the invention; numerous other arrangements may be devised by those skilled in the art without departing from lthe spirit and scope of the invention.

What is claimed is:

1. An educational apparatus for aiding the teaching of history comprising first and second reels, a paper tape having portions thereof calibrated according to and displaying successive dates, said tape 'being Wound on said first and second reels, means for sequentially displaying said portions of said tape for the entry thereon of pictorial historical representations adjacent appropriate ones of said successive dates, and means for automatically attaching said pictorial historical representations to said tape.

Z. An educational apparatus for aiding the teaching of history comprisng a linearly dated tape -for representing thereon historical vignettes, means for moving said tape to expose any preselected portion thereof, voice recording means, means for recording on said voice recording means, and means for synchonizing said voice recording means and said linearly dated tape.

3. An educational apparatus comprising a paper tape for depicting thereon historical events in chronological order, a magnetic tape for recor'ding thereon verbal descriptions of the events 'depicted on said paper tape, means `for synchronizing said paper and magnetic tapes, means for exposing to view only a preselected portion of said paper tape, and means for automatically playing back that portion of said magnetic tape haivng recorded thereon the description of the event depicted on said preselected portion of said paper tape.

4. An educational apparatus for aiding t e teaching of history comprising a scaled dated tape vfor representing thereon historical vignettes, voice recording means for recording verbal descriptions of said historical vignettes, means for identifying on said recording means the historical -vignettes of which each recording is descriptive, and means for automatically exposing any preselected portion of said tape and for playing back the associated verbal description on said voice recording means.

5. A method of teaching history including the Steps (1) sequentially displaying for view successive portions of a calibrated tape having printed thereon historical dates in chronological sequence,

(2) arranging a plurality of vignettes in chronological order,

(3) afiixing appropriate vi'gnettes adjacent to the corresponding dates on said tape,

(4) recording verbal descriptions of the vignettes being atiixed on said tape, and

ananasa (5) synchronizing the tape and verbal descriptions to 502,195 Great Britain Mar. 14, 1939 each other' OTHER REFERENCES References Cited ir. the fiie of this patent r UNITED STATES PATENTS 5 Skinner: Professor Skinneris Teaching Machine, page 195, Fortune, November 1958.

gu? Brochure, Rheem Califone Language Lab0ratory, e Rheem Califone Corporation, Hollywood 38, Calif., pub- FOREIGN PATENTS lished March 1960.

144,032 Great Britain 'Inne 10, 1920 10 

1. AN EDUCATIONAL APPARATUS FOR AIDING THE TEACHING OF HISTORY COMPRISING FIRST AND SECOND REELS, A PAPER TAPE HAVING PORTIONS THEREOF CALIBRATED ACCORDING TO AND DISPLAYING SUCCESSIVE DATES, SAID TAPE BEING WOUND ON SAID FIRST AND SECOND REELS, MEANS FOR SEQUENTIALLY DISPLAYING SAID PORTIONS OF SAID TAPE FOR THE ENTRY THEREON OF PICTORIAL HISTORICAL REPRESENTATIONS ADJACENT APPROPRIATE ONES OF SAID SUCCESSIVE DATES, AND MEANS FOR AUTOMATICALLY ATTACHING SAID PICTORIAL HISTORICAL REPRESENTATIONS TO SAID TAPE. 